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As the cost efficiency of the next generation DNA sequencing technology keeps improving, there is an ever-increasing demand for high-throughput software to align the enormous number of short reads (patterns) with reference genomes (such as the human genome). In the past few years, a number of very fast alignment software (e.g., Maq, SOAP2, ZOOM, Bowtie,(More)
Knowledge of vehicle headway distribution is very important for intelligent transportation and intelligent vehicle simulations. Various headway distribution models have been proposed, but most of them only fit for a certain traffic situation. To solve this problem, we study the dependence of headway distributions on traffic status in this paper. Results(More)
From 8th to 24th in August 2008, a set of Traffic Demand Management (TDM) policies were applied in Beijing during the 2008 Olympic Games. These TDM strategies include improving performance of the existing transportation network, staggering work schedules and limiting the use of public vehicles and private vehicles. This paper studies the performance(More)
Visual sensing plays an essential role in intelligent vehicles. With the aid of visual sensors, driver assistance systems can alert the driver to dangerous situations or actions (such as swerving out of the lane or disregarding traffic signs or lights), or even independently take control of the vehicle. Currently, research on vehicle vision systems is(More)
In this paper, we propose a new traffic flow model, aiming to provide a possible explanation and meanwhile a useful simulation tool for the multi-fractal network traffic. It is shown that the Hurst exponent for the mainline traffic flow will appear crossover phenomena, if it consists of several self-similar components with different Hurst exponents.(More)
The anaphylactoid reactions induced by andrographis injection have repeatedly been reported. The aim of our study was to evaluate the immuno-sensitizing potential of extracts from Andrographis paniculata Nees and to screen for the constituent that is responsible for inducing the anaphylactoid reaction. In the direct popliteal lymph node assay (D-PLNA),(More)
Data mining has attracted a lot of research efforts during the past decade. However, little work has been reported on the efficiency of supporting a large number of users who issue different data mining queries periodically when there are new needs and when data is updated. Our work is motivated by the fact that the pattern-growth method is one of the most(More)
This paper discusses the trend modeling for traffic time series. First, we recount two types of definitions for a long-term trend that appeared in previous studies and illustrate their intrinsic differences. We show that, by assuming an implicit temporal connection among the time series observed at different days/locations, the PCA trend brings several(More)